A Complete Web Part research in sharepoint 2010

Excellent WebPart Tutorial (even if it miss what I need :-)



Bad joke of the day - Microsoft is still using the wss class for connecting the out-of-the box web part !

see

Demo webpart and toolpart

Beth demo consuming external data

A connection demo

An other sample

a simple sample

a complete business logic
Connect Web Parts in SharePoint 201

HowTo load a dropdown in a toolpart

A detailed demo